Plastic closure with compression molded barrier liner
US6696123B2 · kind B2 · utility
5Cited by
46References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2002 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | May 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic closure that includes a cap having a base with a peripheral skirt defining a cap interior and threads on the skirt for securing the closure to a container. A liner is secured to the interior of the cap, preferably by compression molding in situ. The liner preferably consists essentially of a blend of matrix polymer material, particulate barrier polymer material and compatibilizer material. The heat and pressure of compression forms the particles of barrier polymer material into platelets that are oriented essentially parallel to the plane of the closure base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.